JP2016222592A - Hair cleansing agent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hair cleansing agent composition which is excellent in foamability, fineness of foam and smoothness of hair during rinsing and can improve the flexibility of the scalp and increase the moisture content of the scalp.SOLUTION: There is provided a hair cleansing agent composition which comprises (A) a polyoxyethylene alkyl ether sulfate, (B) an amphoteric surfactant, (C) an N-acylamino acid ester, (D) a polyoxyethylene hardened castor oil having an average addition mol number of ethylene oxide of 5 to 30 and (D) a cationic polymer, wherein the mass ratio (D/C) between the content (mass%) of the (C) N-acylamino acid ester and the content (mass%) of the (D) polyoxyethylene hardened castor oil having an average addition mol number of ethylene oxide of 5 to 30 is 1 to 12.5.SELECTED DRAWING: None

Description

  The present invention relates to a hair cleansing composition.

  Problems with scalp and hair that accompany aging include hair loss, fine hair, hair swell, hair dryness, scalp hardening, and scalp drying. In response to these problems, hair cosmetics that are excellent in damage improvement and repair effects and can improve the smoothness of the finish have been proposed (see, for example, Patent Documents 1 to 3). However, techniques for curing the scalp and the problem of dryness of the scalp have not been developed so far.

  Therefore, it is desired to provide a hair cleansing composition that is excellent in foaming, fine foam, and smooth hair during rinsing, can improve the flexibility of the scalp, and can increase the moisture content of the scalp. ing.

JP 2010-235507 A JP 2010-168310 A JP 2008-231346 A

  An object of the present invention is to solve the above-described problems and achieve the following objects. That is, the present invention provides a hair cleansing composition that is excellent in foaming, fineness of foam, and smoothness of hair during rinsing, can improve the flexibility of the scalp, and can increase the moisture content of the scalp. The purpose is to provide.

  As a result of intensive studies by the inventor in order to solve the above problems, (A) polyoxyethylene alkyl ether sulfate, (B) amphoteric surfactant, (C) N-acyl amino acid ester, (D) ethylene oxide Polyoxyethylene hydrogenated castor oil having an average added mole number of 5 to 30, and (E) a cationic polymer, the content (% by mass) of the (C) N-acylamino acid ester, D) Hair cleanser composition whose mass ratio (D / C) with the content (mass%) of polyoxyethylene hydrogenated castor oil whose average added mole number of ethylene oxide is 5-30 is 1-12.5. Due to the synergistic effect of each component, the product is excellent in foaming, fineness of foam, and smoothness of hair during rinsing, can improve the flexibility of the scalp, and can increase the moisture content of the scalp. It was found that.

This invention is based on the said knowledge by this inventor, and as a means for solving the said subject, it is as follows.
<1> (A) polyoxyethylene alkyl ether sulfate,
(B) an amphoteric surfactant,
(C) N-acyl amino acid ester,
(D) polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of 5 to 30, and (E) a cationic polymer,
The content (mass%) of the (C) N-acyl amino acid ester and the content (mass%) of polyoxyethylene hydrogenated castor oil in which the average added mole number of the (D) ethylene oxide is 5 to 30 It is a hair cleaning composition characterized by having a mass ratio (D / C) of 1 to 12.5.
<2> The content of (C) N-acylamino acid ester is 0.08% by mass to 1% by mass,
(D) The hair cleaning composition according to <1>, wherein the content of polyoxyethylene hydrogenated castor oil having an average addition mole number of ethylene oxide of 5 to 30 is 0.1% by mass to 1% by mass. It is.
<3> The content of (A) polyoxyethylene alkyl ether sulfate is 12% by mass to 20% by mass,
(E) The content of the cationic polymer is 0.1% by mass to 1% by mass,
(C) Mass ratio of content (mass%) of N-acyl amino acid ester and content (mass%) of polyoxyethylene hydrogenated castor oil whose average added mole number of (D) ethylene oxide is 5-30 (D / C) is the hair cleaner composition according to any one of <1> to <2>, wherein 3 to 9.
<4> (B) The amphoteric surfactant is at least one selected from alkylbetaine amphoteric surfactants, amide betaine amphoteric surfactants, and imidazolinium betaine amphoteric surfactants,
The hair cleansing composition according to any one of <1> to <3>, wherein the content of the (B) amphoteric surfactant is 1% by mass to 20% by mass.

  According to the present invention, it is possible to solve the above-mentioned problems and achieve the above-mentioned object, and it is excellent in foaming, fineness of foam, and smoothness of hair during rinsing, and improves the flexibility of the scalp. It is possible to provide a hair cleansing composition that can increase the amount of water in the scalp.

(Hair cleaning composition)
The hair cleansing composition of the present invention has an average addition mole number of (A) polyoxyethylene alkyl ether sulfate, (B) amphoteric surfactant, (C) N-acyl amino acid ester, and (D) ethylene oxide. It contains ~ 30 polyoxyethylene hydrogenated castor oil and (E) a cationic polymer, and further contains other components as necessary.

<(A) Polyoxyethylene alkyl ether sulfate>
The polyoxyethylene alkyl ether sulfate of component (A) is contained to improve foaming, fineness of foam, smoothness of hair at the time of rinsing, flexibility of scalp, and moisture content of scalp. Yes.

As carbon number of the alkyl group part of the polyoxyethylene alkyl ether sulfate of the said (A) component, 10-24 are preferable and 12-14 are more preferable from the point of foaming.
The average added mole number of ethylene oxide of the polyoxyethylene alkyl ether sulfate of the component (A) (hereinafter sometimes referred to as “EO”) is preferably 1 to 3 from the viewpoint of good foaming. ~ 3 is more preferred.
There is no restriction | limiting in particular as a salt of the polyoxyethylene alkyl ether sulfate of said (A) component, According to the objective, it can select suitably, For example, an alkali metal, ammonium, an alkanolamine, etc. are mentioned. Among these, alkali metals and ammonium are preferable, sodium and ammonium are more preferable, and sodium is particularly preferable.

  There is no restriction | limiting in particular as polyoxyethylene alkyl ether sulfate of said (A) component, According to the objective, it can select suitably, For example, the compound etc. which are represented with the following general formula (a) are mentioned.

^{_{R 1 O (CH 2 CH 2}} O) m SO 3 M 1 ··· formula (a)
(In the general formula (a), R ¹ represents an alkyl group, M ¹ represents an alkali metal, ammonium, or alkanolamine, and m represents an integer of 1 to 3)

  Examples of the polyoxyethylene alkyl ether sulfate of the component (A) include polyoxyethylene capryl ether sulfate (EO: 1 to 3), polyoxyethylene lauryl ether sulfate (EO: 1 to 3), polyoxyethylene Examples include ethylene myristyl ether sulfate (EO: 1 to 3), polyoxyethylene palmityl ether sulfate (EO: 1 to 3), and polyoxyethylene stearyl ether sulfate (EO: 1 to 3). These may be used alone or in combination of two or more. Among these, polyoxyethylene lauryl ether sulfate (EO: 1 to 3) is preferable, and polyoxyethylene lauryl ether ammonium sulfate (EO: 2) is more preferable from the viewpoint of good foaming and fineness of the foam.

  As the polyoxyethylene alkyl ether sulfate of the component (A), a commercially available product may be used, or an appropriately synthesized product may be used. Examples of the commercially available product include trade name: EMAL 170J (sodium polyoxyethylene lauryl ether sulfate (EO: 1), manufactured by Kao Corporation), trade name: Sinoline SPE-1250 (sodium polyoxyethylene lauryl ether sulfate (EO) : 2), manufactured by Shin Nippon Rika Co., Ltd.), trade name: Teikapol NE1270 (polyoxyethylene lauryl ether ammonium sulfate (EO: 3), manufactured by Teika Co., Ltd.), and the like. These may be used alone or in combination of two or more. Among these, the product name: Sinoline SPE-1250 (polyoxyethylene lauryl ether sodium sulfate (EO: 2), manufactured by Shin Nippon Rika Co., Ltd.) is preferable from the viewpoint of good foaming and fineness of foam.

  As the content of the polyoxyethylene alkyl ether sulfate of the component (A), from the viewpoint of good foaming, fine foam, smooth hair during rinsing, scalp flexibility, and scalp moisture content, 5 mass%-25 mass% are preferable with respect to the hair cleaning composition whole quantity, and 12 mass%-20 mass% are more preferable. When the content is less than 5% by mass, the foaming and fineness of the foam may be insufficient. When the content exceeds 25% by mass, the smoothness of the hair during rinsing, the flexibility of the scalp, And the amount of water in the scalp may be insufficient. Moreover, when it does not contain (A) component, since the coacervate with (E) component is not formed, the smoothness of the hair at the time of a rinse becomes inadequate.

<(B) Amphoteric surfactant>
The (B) component amphoteric surfactant is contained in order to improve the fineness of foam, the flexibility of the scalp, and the moisture content of the scalp.

  The amphoteric surfactant of the component (B) is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include betaine amphoteric surfactants, aminopropionic acid amphoteric surfactants, and amino acid amphoteric surfactants. Surfactant etc. are mentioned. These may be used individually by 1 type and may use 2 or more types together. Among these, betaine amphoteric surfactants are preferable.

  Examples of the betaine amphoteric surfactants include alkylbetaine amphoteric surfactants, amide betaine amphoteric surfactants, sulfobetaine amphoteric surfactants, phosphobetaine surfactants, and imidazolinium betaine amphoteric interfaces. An active agent etc. are mentioned. These may be used individually by 1 type and may use 2 or more types together. Among these, alkylbetaine amphoteric surfactants, amidobetaine amphoteric surfactants, and imidazolinium betaine amphoteric surfactants are preferred, and amide betaine amphoteric surfactants are more preferred from the viewpoint of fineness of foam. .

  Examples of the alkylbetaine amphoteric surfactants include alkyldimethylaminoacetic acid betaines. Examples of the alkyldimethylaminoacetic acid betaine include lauryldimethylaminoacetic acid betaine, myristyldimethylaminoacetic acid betaine, and stearyldimethylaminoacetic acid betaine. These may be used individually by 1 type and may use 2 or more types together. Among these, lauryldimethylaminoacetic acid betaine is preferable.

  Examples of the amidobetaine amphoteric surfactant include alkylamidopropylbetaine. Examples of the alkylamidopropyl betaine include coconut oil fatty acid amidopropyl betaine (cocamidopropyl betaine), lauric acid amidopropyl betaine, and isostearamidopropyl betaine. These may be used individually by 1 type and may use 2 or more types together. Among these, lauric acid amidopropyl betaine and coconut oil fatty acid amidopropyl betaine are preferable.

Examples of the sulfobetaine amphoteric surfactants include hydroxysulfobetaine amphoteric surfactants and amide sulfobetaine amphoteric surfactants.
Examples of the hydroxysulfobetaine amphoteric surfactants include coconut oil fatty acid dimethylaminohydroxysulfobetaine, lauryldimethylaminohydroxysulfobetaine, and laurylhydroxysulfobetaine. These may be used individually by 1 type and may use 2 or more types together.
Examples of the amidosulfobetaine-based amphoteric surfactant include dodecylaminomethyldimethylsulfopropylbetaine and octadecylaminomethyldimethylsulfopropylbetaine. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the phosphobetaine surfactant include alkylhydroxyphosphobetaine. Examples of the alkyl hydroxyphosphobetaine include lauryl hydroxyphosphobetaine, myristyl hydroxyphosphobetaine, stearyl hydroxyphosphobetaine, and the like. These may be used individually by 1 type and may use 2 or more types together.

  Examples of the imidazolinium betaine-based amphoteric surfactant include coconut oil alkyl-N-hydroxyethyl imidazolinium betaine, coconut oil alkyl-N-carboxyethyl-N-hydroxyethyl imidazolinium betaine, 2-alkyl- N-carboxymethyl-N-hydroxyethyl imidazolinium betaine etc. are mentioned. These may be used individually by 1 type and may use 2 or more types together. Among these, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine is preferable.

  Examples of the aminopropionic acid-based amphoteric surfactant include sodium laurylaminodipropionate and triethanolamine laurylaminodipropionate. These may be used individually by 1 type and may use 2 or more types together.

Examples of the amino acid-based amphoteric surfactant include alkylamino fatty acids or salts thereof. Examples of the alkylamino fatty acid include laurylamino fatty acid, stearylamino fatty acid, myristylamino fatty acid and the like. These may be used individually by 1 type and may use 2 or more types together.
Examples of the counter ion of the salt include alkali metal salts, ammonium salts, alkanolamine salts, and the like. Among these, alkali metal salts are preferable, sodium and potassium are more preferable, and sodium is particularly preferable.

  As the amphoteric surfactant of the component (B), a commercially available product can be used. Examples of the commercially available product include trade name: Enadicol L-30B (amidopropyl betaine laurate, manufactured by Otsuka Kogyo Co., Ltd.) ), Product name: Amhitoal 55AB (coconut oil fatty acid amidopropyl betaine solution), product name: Amhitoal 20Y-B (2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine) (above, manufactured by Kao Corporation) ), Amorgen SH (Lauryldimethylaminoacetic acid betaine, manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) and the like. These may be used individually by 1 type and may use 2 or more types together.

  The content of the amphoteric surfactant of the component (B) is 1% by mass to 20% with respect to the total amount of the hair cleaning composition in terms of fineness of foam, flexibility of the scalp, and moisture content of the scalp. % By mass is preferable, and 3% by mass to 10% by mass is more preferable. When the content is less than 1% by mass, the fineness of the foam and the moisture content of the scalp may be insufficient. When the content exceeds 20% by mass, the flexibility of the scalp and the moisture content of the scalp are increased. It may be insufficient.

<(C) N-acyl amino acid ester>
The N-acyl amino acid ester of the component (C) is contained in order to improve foaming, fineness of foam, smoothness of hair during rinsing, flexibility of scalp, and moisture content of scalp.

The (C) component N-acylamino acid ester is an ester of an N-acylamino acid and a higher alcohol.
The N-acyl amino acid is not particularly limited as long as it has an acyl group, and can be appropriately selected according to the purpose. Examples thereof include N-acyl acidic amino acids. Examples of the N-acyl acidic amino acid include N-acyl aspartic acid and N-acyl glutamic acid. These may be used individually by 1 type and may use 2 or more types together. Among these, N-acyl glutamic acid is preferable.
The structures of these amino acids may be optically active or racemic.
The acyl group is preferably an acyl group derived from a saturated or unsaturated fatty acid having 8 to 22 carbon atoms, for example, an acyl group formed by a fatty acid having a single composition such as lauric acid, palmitic acid, stearic acid, or oleic acid. In addition, it may be a mixed fatty acid obtained from nature such as coconut oil fatty acid, beef tallow fatty acid, hardened beef tallow fatty acid, or an acyl group of fatty acids (including branched fatty acids) obtained by synthesis.
There is no restriction | limiting in particular as said higher alcohol, For example, a sterol, a C8-C38 alkyl alcohol, a C8-38 alkenyl alcohol, etc. are mentioned. Among these, sterols, liquid higher alkyl alcohols having 8 to 30 carbon atoms, liquid higher alkenyl alcohols having 8 to 30 carbon atoms, and solid higher alkyl alcohols having 12 to 38 carbon atoms are preferable.

The N-acyl acidic amino acid ester of the component (C) may be a monoester or a diester, and is preferably a diester having at least one of two ester-forming residues being a sterol residue. .
The sterol may be animal-derived or plant-derived, and examples thereof include cholesterol, phytosterol, and hydrogenated products thereof.
The liquid higher alkyl alcohol having 8 to 30 carbon atoms and the liquid higher alkenyl alcohol having 8 to 38 carbon atoms are natural or synthetic aliphatic alcohols having 8 to 30 carbon atoms and are liquid at room temperature. Examples thereof include branched alcohols such as 2-octyldodecyl alcohol, unsaturated alcohols such as oleyl alcohol, and the like.
The solid higher alkyl alcohol having 12 to 38 carbon atoms is a saturated monohydric alcohol having 12 to 38 carbon atoms and is solid at room temperature, and examples thereof include cetyl alcohol and behenyl alcohol. It is done.

  The N-acyl amino acid ester of the component (C) can be used alone or in combination of two or more, and preferably contains at least one ester residue having a sterol residue.

  Examples of the N-acyl amino acid ester of the component (C) include N-lauroyl-L-glutamate di (phytosteryl / 2-octyldodecyl), N-lauroyl-L-glutamate di (cholesteryl / behenyl / octyldodecyl), Examples include N-lauroyl-L-glutamate di (cholesteryl / octyldodecyl) and N-lauroyl-L-glutamate di (phytosteryl / behenyl / 2-octyldodecyl). These may be used individually by 1 type and may use 2 or more types together. Among these, N-lauroyl-L-glutamate di (cholesteryl / octyldodecyl) and N-lauroyl-L-glutamate di (phytosteryl / 2-octyldodecyl) are preferable from the viewpoint of scalp flexibility, and N-lauroyl- More preferred is L-glutamate di (phytosteryl / 2-octyldodecyl).

  As the N-acylamino acid ester of the component (C), a commercially available product can be used. Examples of the commercially available product include trade name: Erdeu PS-203 (N-lauroyl-L-glutamate di (phytosteryl / 2). -Octyldecyl)), trade name: Erdeu CL-301 (N-lauroyl-L-glutamate di (cholesteryl / behenyl / octyldodecyl)), trade name: Erduu CL-202 (N-lauroyl-L-glutamate di (cholesteryl) / Octyldodecyl), trade name: Erduu PS-304 (N-lauroyl-L-glutamate di (phytosteryl / behenyl / octyldodecyl)), trade name: Erduu PS-306 (N-lauroyl-L-glutamate di (octyl) Dodecyl / phytosteryl / behenyl)), ( On, manufactured by Ajinomoto Co., Inc.), and the like. These may be used individually by 1 type and may use 2 or more types together.

  As the content of the N-acyl amino acid ester of the component (C), from the viewpoint of good foaming, fineness of foam, softness of the scalp, and moisture content of the scalp, 0.05 mass%-3 mass% are preferable, and 0.08 mass%-1 mass% are more preferable. When the content is less than 0.05% by mass, the scalp flexibility and the moisture content of the scalp may be insufficient. When the content exceeds 3% by mass, the foaming is good and the foam is fine. May be insufficient.

<(D) Polyoxyethylene hydrogenated castor oil>
The (D) component polyoxyethylene hydrogenated castor oil is contained to improve foaming, fineness of foam, flexibility of scalp, and moisture content of scalp.

The (D) component polyoxyethylene hydrogenated castor oil is an esterified product obtained by addition polymerization of ethylene oxide to hydrogenated castor oil.
As an average addition mole number of ethylene oxide of the said polyoxyethylene hydrogenated castor oil, it is 5-30, and 7-20 are preferable. Polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of less than 5 is generally not commercially available. On the other hand, if it exceeds 30, the foaming quality, the fineness of the foam, the flexibility of the scalp, and the moisture content of the scalp will be insufficient.
As an HLB value of the said polyoxyethylene hydrogenated castor oil, 5-11 are preferable and 6-9 are more preferable.

  As the (D) component polyoxyethylene hydrogenated castor oil, a commercially available product can be used. Examples of the commercially available product include trade name: EMALEX HC-5 (EO: 5, HLB value: 5), product Name: EMALEX HC-7 (EO: 7, HLB value: 6), trade name: EMALEX HC-10 (EO: 10, HLB value: 7), trade name: EMALEX HC-20 (EO: 20, HLB value: 9), trade name: EMALEX HC-30 (EO: 30, HLB: 11) (above, manufactured by Nippon Emulsion Co., Ltd.), trade name: Braunon CW-20-90 (EO: 20, manufactured by Aoki Oil & Fat Co., Ltd.) Etc. These may be used alone or in combination of two or more. Among these, trade name: EMALEX HC-20 (EO: 20, HLB value: 9) is preferable.

  In addition, the said HLB value is shown by the IOB value x10 in an organic conceptual diagram. The IOB in the organic conceptual diagram refers to the ratio of the inorganic value (IV) to the organic value (OV) in the organic conceptual diagram, that is, “inorganic value (IV) / organic value (OV)”. The organic conceptual diagram was proposed by Satoshi Fujita, and details thereof are described in “Pharmaceutical Bulletin”, 1954, vol. 2, 2, pp. 163-173, “Area of Chemistry”, 1957, vol. 11, 10, pp. 719-725, "Fragrance Journal", 1981, vol. 50, pp. 79-82, “Organic Conceptual Diagram: Basics and Applications” (by Yoshio Koda, Sankyo Publishing, 1984).

  The content of the (D) component polyoxyethylene hydrogenated castor oil is based on the total amount of the hair cleaning composition from the viewpoint of good foaming, fineness of foam, softness of scalp, and moisture content of scalp. 0.05 mass% to 3 mass% is preferable, and 0.1 mass% to 1 mass% is more preferable. When the content is less than 0.05% by mass, good foaming, fineness of the foam, softness of the scalp, and moisture content of the scalp may be insufficient, and when it exceeds 3% by mass, The foaming quality and the fineness of the foam may be insufficient.

<Mass ratio (D / C)>
The content (mass%) of the N-acyl amino acid ester of the component (C) and the content (mass of polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of the component (D) of 5 to 30 %) And the mass ratio (D / C) is 1 to 12.5 in terms of foaming, fineness of foam, smoothness of hair at the time of rinsing, flexibility of scalp, and moisture content of scalp. And 3-9 are preferred. When the mass ratio (D / C) is less than 1, the foaming quality, the scalp flexibility, and the moisture content of the scalp are insufficient, and when it exceeds 12.5, the fineness of the foam and when rinsing The smoothness of the hair becomes insufficient.

<(E) Cationic polymer>
The cationic polymer of the component (E) is contained to improve the smoothness of hair during rinsing, the flexibility of the scalp, and the moisture content of the scalp.

  Examples of the cationic polymer of the component (E) include cationized cellulose (for example, O- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethyl cellulose chloride, trade name: kachinal HC-100, trade name). : Katchinal HC-200, trade name: Katchinal LC-100, trade name: Katchinal LC-200 (Toho Chemical Co., Ltd.), etc., cationized guar gum (for example, O- [2-hydroxy-3- (trimethylammonium chloride) O) propyl] guar gum, trade name: JAGUAR EXCEL, manufactured by Sansho Co., Ltd.), cationized locust bean gum, cationized tara gum, homopolymer of diallyl quaternary ammonium salt, diallyl quaternary ammonium salt / acrylamide copolymer (for example, , Dimethyldiallylammoni Muchloride / acrylamide copolymer, trade name: Marquat 2200, manufactured by Nalco Co., Ltd.), quaternized polyvinylpyrrolidone derivative, polyglycol polyamine condensate, vinylimidazolium trichloride / vinylpyrrolidone copolymer, hydroxyethylcellulose / dimethyldiallyl Ammonium chloride copolymer, vinylpyrrolidone / quaternized dimethylaminoethyl methacrylate copolymer, polyvinylpyrrolidone / alkylaminoacrylate copolymer, polyvinylpyrrolidone / alkylaminoacrylate / vinylcaprolactam copolymer, vinylpyrrolidone / methacrylamidopropyl chloride Trimethylammonium copolymer, alkylacrylamide / acrylate / alkylaminoalkylacrylamide / polyethylene group Examples thereof include a recall methacrylate copolymer and an adipic acid / dimethylaminohydroxypropylethylenetriamine copolymer. These may be used individually by 1 type and may use 2 or more types together. Among these, cationized cellulose (chlorinated O- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose) and cationized guar gum (O- [2-chloride) are preferable from the viewpoint of smoothness of hair during rinsing. Hydroxy-3- (trimethylammonio) propyl] guam gum) is preferred, and cationized cellulose (chlorinated O- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose) is more preferred.

  There is no restriction | limiting in particular as a weight average molecular weight of the cationic polymer of the said (E) component, Although it can select suitably according to the objective, 2,000,000 or less is preferable, 100,000 or more and 2,000,000 are preferable. 000 or less is more preferable, and 100,000 or more and 1,600,000 or less are particularly preferable. The weight average molecular weight is a value measured using GPC-MALLS, and a sample solution diluted with a mobile phase having a pure polymer concentration of about 1,000 ppm is prepared using a TSK-GELA column (manufactured by Tosoh Corporation). And a wavelength of about 633 nm can be measured by a multi-angle light scattering detector using a 0.5 mol / L sodium perchlorate solution as a mobile phase. As a standard product, polyethylene glycol having a known molecular weight can be used.

  The content of the cationic polymer of the component (E) is 0.05% with respect to the total amount of the hair cleaning composition in terms of the smoothness of the hair during rinsing, the flexibility of the scalp, and the moisture content of the scalp. % By mass to 2% by mass is preferable, and 0.1% by mass to 1% by mass is more preferable. When the content is less than 0.05% by mass, the smoothness of the hair at the time of rinsing, the flexibility of the scalp, and the moisture content of the scalp may be insufficient, and when the content exceeds 2% by mass, Not only may the flexibility of hair be insufficient, but there may be problems such as stiff hair.

<Other ingredients>
There is no restriction | limiting in particular as said other component, In addition to each component of said (A) component-(E) component, another component can be contained in the range which does not impair the effect of this invention.
There is no restriction | limiting in particular as said other component, According to the objective, it can select suitably, For example, Anionic surfactant other than the said (A) component, Liquid oil components other than the said (C) component, Solid fat , Nonionic surfactants other than the component (D), anionic polymers, nonionic polymers, polyols, inorganic salts such as sodium chloride, salt salt, organic salts, moisturizers such as polyglyceryl monolaurate and propylene glycol, tonic agents, Solubilizers, antioxidants such as BHT and α-tocopherol, fungicides such as triclosan and trichlorocarban, viscosity modifiers such as fatty acid monoethanolamide and fatty acid diethanolamide, ultraviolet absorbers, protein derivatives, animal and plant extracts, pyro Anti-dandruff agents such as kutonolamine and zinc pyrithione, and anti-flames such as dipotassium glycyrrhizinate Agents, benzoic acid or salts thereof, parabens, preservatives such as caisson CG, pH adjusters such as citric acid and triethanolamine, emulsions, hydrotropes, lower alcohols, vitamins, volatile oils, hydrophobic solvents And dilutable solvents such as purified water, pigments, and fragrances. These may be used individually by 1 type and may use 2 or more types together.

-PH-
As pH at 25 degreeC of the said hair-cleaning agent composition, 3-7 are preferable. If the pH is less than 3, there is a concern about irritation to the background, and if it exceeds 7, the antiseptic power may be reduced and microorganisms may propagate. The pH can be measured according to the quasi-drug raw material standard general test method pH measurement method.

  The pH of the hair cleansing composition can be adjusted by adding a pH adjusting agent such as citric acid while finally checking the pH after mixing all the components. More specifically, purified water is balanced and mixed and stirred so that the total of components other than the pH adjuster such as citric acid is about 98% by mass. If necessary, it may be heated. While mixing and stirring, an aqueous solution of a pH adjusting agent such as citric acid is gradually added, and each is added to the target pH while measuring the pH. When the target pH is reached, the remaining purified water is finally added, and water is added so that the total amount becomes 100% by mass. The pH can be measured according to the quasi-drug raw material standard general test method pH measurement method.

-Viscosity-
There is no restriction | limiting in particular as a viscosity of the said hair-cleaning agent composition, Although it can select suitably according to the objective, 1 Pa.s-25 Pa.s are preferable at 25 degreeC, and 8 Pa.s-16 Pa.s are More preferred. When the viscosity is less than 1 Pa · s, it may be difficult to use because it spills from the hand during use, and when it exceeds 25 Pa · s, the dischargeability from the container may be deteriorated. In addition, as said viscosity, it can measure at 25 degreeC based on a quasi-drug raw material standard general test method viscosity measuring method 2nd method.

-Dosage form-
There is no restriction | limiting in particular as a shape and dosage form of the said hair-cleaner composition, According to the objective, it can select suitably. Examples of the shape include liquid, cream, foam, gel, and wax. Examples of the dosage form include a pump type, a spray type, and a tube type.

-Manufacturing method-
There is no restriction | limiting in particular as a manufacturing method of the said hair-cleaner composition, According to the objective, it can select suitably, It mixes the said (A) component-the said (E) component, and the said other component, and is prepared. can do. Specifically, the component (E) and purified water are uniformly mixed at 50 ° C. to 60 ° C. and swelled, and then heated to 70 ° C. to 75 ° C. to obtain the component (A) and the component (B). ) Add ingredients and mix uniformly. Then, it cools to 40 degrees C or less, the mixture of the said (C) component and the said (D) component is added, and it mixes uniformly. After cooling to 30 ° C. or lower, the other components are added, and the remaining amount of purified water is blended and mixed uniformly so that the total amount of the hair cleaning composition is 100% by mass to obtain a hair cleaning composition. be able to.
There is no restriction | limiting in particular as an apparatus which prepares the said hair-cleaning-agent composition, According to the objective, it can select suitably, For example, it equips with several stirring blades (propeller, turbine, a disper, etc.) which can carry out shearing and the whole mixing. And a stirrer.

-Container-
There is no restriction | limiting in particular as said container, According to the objective, it can select suitably, For example, tube containers, such as an aluminum laminate tube, an EVAL tube, an aluminum tube, a glass vapor deposition plastic tube, a pump container by mechanical or a differential pressure And squeeze containers, laminate film containers, dropper containers, bottle containers, and the like.
Examples of the material of the aluminum laminated tube container include a laminated film. The laminate film usually has two or more layers, and more preferably two to five layers, from the viewpoint of strength, flexibility, weather resistance and the like. Examples of the material of the laminate film include polyethylene, polyethylene terephthalate, polyester, biaxially stretched polypropylene, unstretched polypropylene, polyacrylonitrile, a synthetic resin such as an ethylene-vinyl acetate copolymer, paper, and aluminum vapor-deposited plastic. .
Examples of the material of the bottle container include polyethylene, polypropylene, polyethylene terephthalate, polystyrene, polyvinyl chloride, ethylene-vinyl alcohol resin, acrylonitrile-styrene resin, ABS resin, polyamide, glass, and the like. Single layer to two layers It is preferable to use in combination.

-Use-
The hair cleanser composition of the present invention is excellent in foaming, fineness of foam, and smoothness of hair at the time of rinsing, can improve the flexibility of the scalp, and can increase the moisture content of the scalp, For example, it is suitable for in bath hair care agents such as shampoo and rinse-in shampoo.

  Hereinafter, the present invention will be described more specifically based on examples and comparative examples, but the present invention is not limited to the following examples. In addition, all the content of each component of description of an Example and a comparative example is the value converted into a pure part.

(Examples 1-34 and Comparative Examples 1-15)
The compositions shown in the following Tables 1 to 13 and the hair cleaning compositions having the contents were prepared by the following method. That is, (E) component or (E ′) component and purified water are uniformly mixed at 50 ° C. to 60 ° C. and swollen, and then heated to 70 ° C. to 75 ° C. to obtain (A) component or (A ′ ) Component and (B) component or (B ′) component were added and mixed uniformly. Then, it cooled to 40 degrees C or less, the mixture of (C) component or (C ') component, and (D) component or (D') component was added, and it mixed uniformly. After cooling to below 30 ° C, add common components (pyroctone olamine, polyglyceryl monolaurate, propylene glycol, and sodium benzoate), mix uniformly, and then adjust the pH to 5.2 using citric acid Thus, a hair cleaning composition was obtained. The pH was measured at 25 ° C. using a pH meter (HM-30G, manufactured by Toa DKK Corporation).

  About the obtained hair cleaning composition of Examples 1-34 and Comparative Examples 1-15, it was as follows and "good foaming", "fineness of foam", and "smoothness of the hair at the time of a rinse" ”,“ Scalp flexibility ”, and“ scalp moisture ”. The results are shown in Tables 1 to 13.

<Good foaming, fine foam, and smooth hair during rinsing>
Ten professional panelists in their 20s to 40s wash their hair with 4 g of each hair cleaning composition, and determine the “goodness of foam” and “fineness of foam” using the following criteria. Points were obtained, the average value of the judgment points was calculated, and evaluated using the following evaluation criteria. Thereafter, the hair was rinsed with hot water, and the "smoothness of the hair during rinsing" was determined using the following criteria, and the average value of the above judgment points was calculated and evaluated using the following criteria .

-Judgment criteria for good foaming-
5 points: very foaming 4 points: foaming 3 points: slightly foaming 2 points: almost no foaming 1 point: no foaming

-Judgment criteria for fineness of foam-
5 points: very fine texture 4 points: fine texture 3 points: slightly fine texture 2 points: slightly rough texture 1 point: rough texture

-Judgment criteria for smoothness of hair during rinsing-
5 points: Very smooth 4 points: Slightly smooth 3 points: Neither can be said 2 points: Slightly smooth 1 point: Not smooth

-Evaluation criteria for good foaming, fineness of foam, and smoothness of hair during rinsing-
◎: Average value of judgment points is 4.5 points or more ○: Average value of judgment points is 3.5 points or more and less than 4.5 points △: Average value of judgment points is 2.5 points or more and less than 3.5 points × : Average value of judgment points is less than 2.5

<Flexibility of scalp>
Four male panelists in their 30s to 40s who feel the scalp hardening and dryness due to aging wash their hair with 4 g of each hair detergent composition and measure the hardness of the scalp at the top and bottom of the hair before and after washing. The hardness of the scalp was measured using a viscoelasticity measuring device (trade name: Vesmeter E-100HS, manufactured by Wave Cyber Co., Ltd.).
Specifically, after acclimating for 30 minutes in a constant temperature and humidity chamber adjusted to 25 ° C. and 40% RH before washing the hair, the probe of the portable wireless viscoelasticity measuring instrument is placed on the top of the head before washing. It was pressed against the scalp and the maximum load was measured. The measurement was performed 10 times, and the average value of the maximum load was defined as the hardness (initial value) of the scalp before washing. Next, shampooing was performed, and after the shampooing, the average value of the maximum load after shampooing was determined under the same habituation and measurement conditions as before the shampooing, and was used as the hardness of the scalp after shampooing. For 4 male panelists, calculate the cure rate of the scalp hardness after washing the hair relative to the scalp hardness (initial value) before washing the hair, calculate the average cure rate of 4 male panelists, and based on the following evaluation criteria The “scalp flexibility” was evaluated. It is known that the average curing rate when washing with a commercially available hair cleansing composition is about 100% to 130%. In addition, the lower the average curing rate, the softer the scalp is than before washing the hair. Here, the top of the head means a place that is at the uppermost position on the head when anatomically normal.
-Evaluation criteria for scalp flexibility-
A: Average curing rate is less than 90% (the scalp is softer than before washing)
○: The average curing rate is 90% or more and less than 100% (the scalp becomes slightly softer than before washing the hair)
(Triangle | delta): An average hardening rate is 100% or more and less than 110% (it becomes the same as before hair washing, or becomes a little hard).
X: The average curing rate is 110% or more (the scalp is harder than before washing the hair)

<Moisture content of scalp>
Four male panelists in their 30s to 40s who feel that the scalp has hardened and dried up due to aging, washed their hair under the same conditions as in the above evaluation of “flexibility of the scalp”. The moisture content of the scalp was measured using a highly sensitive horny layer moisture meter (trade name: ASA-MX, manufactured by Asahi Biomed Co., Ltd.).
Specifically, in the measurement of the hardness of the scalp before and after shampooing in the evaluation of the “scalp flexibility”, except for changing the portable wireless viscoelasticity measuring device to the high-sensitivity horny layer thickness moisture meter before and after the shampooing In the same way as the measurement of scalp hardness, the moisture content of the scalp before and after shampooing is measured, the average value of the moisture content before and after shampooing, the moisture content of the scalp before shampooing (initial value), and after shampooing The amount of water in the scalp. For 4 male panelists, calculate the rate of increase of the scalp moisture after shampooing relative to the amount of water in the scalp before hair washing (initial value), and calculate the average rate of increase for 4 male panelists according to the following evaluation criteria Based on this, “the amount of water in the scalp” was evaluated.
In addition, it is known that the average increase rate when the hair is washed with a commercially available hair cleaning composition is about less than 100%. In addition, the higher the average increase rate, the greater the amount of moisture in the scalp than before shampooing.
-Evaluation criteria for scalp moisture content-
◎: Average increase rate is 110% or more ○: Average increase rate is 100% or more and less than 110% △: Average increase rate is 90% or more and less than 100% ×: Average increase rate is less than 90%

The details of various components used in the examples and comparative examples are shown in Table 14 below.

  The hair cleanser composition of the present invention is excellent in foaming, fineness of foam, and smoothness of hair at the time of rinsing, can improve the flexibility of the scalp, and can increase the moisture content of the scalp, For example, it is suitable for in bath hair care agents such as shampoo and rinse-in shampoo.

Claims (4)

(A) polyoxyethylene alkyl ether sulfate,
(B) an amphoteric surfactant,
(C) N-acyl amino acid ester,
(D) polyoxyethylene hydrogenated castor oil having an average added mole number of ethylene oxide of 5 to 30, and (E) a cationic polymer,
The content (mass%) of the (C) N-acyl amino acid ester and the content (mass%) of polyoxyethylene hydrogenated castor oil in which the average added mole number of the (D) ethylene oxide is 5 to 30 A hair cleansing composition having a mass ratio (D / C) of 1 to 12.5. (C) The content of N-acylamino acid ester is 0.08% by mass to 1% by mass,
(D) Content of polyoxyethylene hydrogenated castor oil whose average addition mole number of ethylene oxide is 5-30 is 0.1 mass%-1 mass%, The hair-cleaner composition of Claim 1. (A) Content of polyoxyethylene alkyl ether sulfate is 12 mass%-20 mass%,
(E) The content of the cationic polymer is 0.1% by mass to 1% by mass,
(C) Mass ratio of content (mass%) of N-acyl amino acid ester and content (mass%) of polyoxyethylene hydrogenated castor oil whose (D) ethylene oxide average addition mole number is 5-30 (D / C) is 3-9, The hair cleansing composition in any one of Claim 1 to 2. (B) The amphoteric surfactant is at least one selected from alkylbetaine amphoteric surfactants, amide betaine amphoteric surfactants, and imidazolinium betaine amphoteric surfactants,
The hair cleansing composition according to any one of claims 1 to 3, wherein the content of the (B) amphoteric surfactant is 1% by mass to 20% by mass.